[NH3:1].[F:2][C:3]1[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[C:7](F)[C:4]=1[C:5]#[N:6]>CS(C)=O>[NH2:1][C:7]1[CH:8]=[C:9]([O:11][CH3:12])[CH:10]=[C:3]([F:2])[C:4]=1[C:5]#[N:6]Ammonia gas was bubbled through a solution of 2,6-difluoro-4-methoxybenzonitrile (1.0 g, 5.91 mmol) in dimethylsulfoxide (11.83 mL) for 10 minutes. The reaction was then sealed and stirred at 90° C. for 24 hours. The reaction mixture was cooled to ambient temperature and concentrated in vacuo to afford a tan residue. The residue was triturated with water, collected be vacuum filtration, and dried in vacuo to afford the title intermediate (0.9 g, 5.42 mmol) as a white solid. LC/MS (ESI+) m/z=167 (M+H).
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